Product Details
HKS Hipermax R coilovers for the 2015-2021 Subaru WRX STI (VA) deliver race-bred handling with street-ready comfort for the Subaru WRX STI. Developed over nine years since the MAX IV SP, the Hipermax R pairs an inverted monotube damper with HKS's exclusive Super Response Fluid (SRF) and Low Vibration Spring (LVS) to sharpen steering response, flatten cornering attitude, and hold damping consistent even after repeated heat cycles.
30-level damping adjustment, length-adjustable shock bodies, and pillowball upper mounts let you dial in the Subaru WRX STI for track sessions or daily commuting without swapping components. Every Hipermax R kit is built in Japan, backed by a 2-year / 40,000 km warranty, and fully rebuildable — the flagship HKS coilover for drivers who refuse to compromise between circuit pace and street civility.
Features
- Inverted monotube damper for strut-type applications — constant damper performance under load
- 30-level 1-way damping adjustment dialed in via the WR Needle valve system
- Super Response Fluid (SRF) — exclusive high-temperature-stable damper oil
- Low Vibration Spring (LVS) — lightweight 210k-grade high-strength spring wire
- Dual Preload Valve System (Dual PVS) — individually tuned per vehicle
- HIPERMAX-exclusive upper spring retainer for coaxial spring/damper alignment
- Pillowball upper mounts (where applicable) — zero deflection, maximum feedback
- Length-adjustable shock body — lower ride height without pre-loading the spring
- PNE corrosion coating on threaded surfaces
- Advanced bump rubber — progressive load response, tuned for race pace
- Dust boots included
- 2-year / 40,000 km warranty
- Rebuildable / serviceable construction
- Made in Japan
Specifications
| Part Number | 80310-AF003 |
| Part Name | HKS Hipermax R Coilovers |
| Vehicle | 2015-2021 Subaru WRX STI |
| Chassis Code | VA |
| Country of Origin | Japan |
| Damping Adjustment | 30-Level 1-Way |
| Height Adjustable | Yes |
| Spring Rate - Front | 14.0 Kg/mm |
| Spring Rate - Rear | 14.0 Kg/mm |
| Spring Length - Front | 170mm |
| Spring Length - Rear | 150mm |
| Upper Mount - Front | Spherical bearing |
| Upper Mount - Rear | Spherical bearing |
| Ride Height Range - Front | -19mm(0mm - -63mm) |
| Ride Height Range - Rear | -14mm(0mm - -54mm) |
| Warranty | 2-year / 40,000 km |
Important Fitment Notes
- Ride height data based on VAB
Vehicle Fitment
- 2015 Subaru WRX STI (VA)
- 2016 Subaru WRX STI (VA)
- 2017 Subaru WRX STI (VA)
- 2018 Subaru WRX STI (VA)
- 2019 Subaru WRX STI (VA)
- 2020 Subaru WRX STI (VA)
- 2021 Subaru WRX STI (VA)